"You are never too small to make a difference. If a few children can get headlines all over the world just by not going to school, imagine what we could all do together if we really wanted to."

"The longer we wait, the more difficult it will be."

"How dare you pretend that this can be solved with just 'business as usual' and some technical solutions? With today's emissions levels, that budget will be entirely gone in less than 8 1/2 years."

"At first when I heard about climate change, I was a climate denier. I didn't think it was happening. Because if there really was an existential crisis like that, that would threaten our civilisation, …"

"We have to tell it like it is. Because if there are no positive things to tell, then what should we do, should we spread false hope?"